A certain triangle has perimeter of 3080 mi. The shortest side measures 78 mi less than the middle side, and the longest side measures 377 mi more than the middle side. Find the lengths of the three sides.
My work is in the attachment but here are some notes:
Draw a diagram and use the given info to label it
Set up an equation which relates all the sides (in this case they add up to the perimeter) using a variable (I picked m because each side is based off of the middle distance)
Solve for your variable and plug it back into the original equation to find your values